Double corner and lock for containers



April 24, 1928. 1,667,017

E. O. TINSLEY DOUBLE CORNER AND LOOK FOR CONTAINERS Filed Nov. 20. 1924 W INVENTOR EDWARD O. QINSLE'K Ma S)- Patented Apr. 24, 1928.

UNlTED STATES PATENT OFFICE.

EDWARD O. TINSLEY, or NEW YORK, N. Y., ASSIGNOR TO ROBERT GAIB COMPANY, or NEW YORK, N. Y., A. CORPORATION on NEW YORK.

DOUBLE OORNER AND LO K FOR CONTAINERS.

Application filedNovember 20, 1924. Serial'No. 751,014.

The present intentiorrrelates to containers or boxes formed by folding suitable material such as cardboard, and has for its principal object the provision of side and end corner locks for retaining the container in operative folded form and reinforcing the container at its ends.

I attain this object and such other objects as may later appear in the subjoined specification descriptive by way of example of one embodiment of the invention and illustrated in the accompanying drawings in which Fig. 1, is a perspective View of the container in operative folded form.

Fig. 2 is a fragmental end view of the container in partly folded form.

Fig. 3 is a View in extended position of the blank from which the container is formed by folding the blank.

The container comprises a bottom 10, outer side walls 11, inner side walls 12, outer end walls 13, inner end walls 14, binding and locking strips 15 on the inner end Walls, and outer and'inner free-hanging end closure tabs 16 and 17 on the outer and inner side walls respectively.

The outer side walls 11 are foldably connected to the bottom 10 along the sides of the bottom. The inner side'walls 12 are 0- foldably connected to the outer side walls v connection to the outer end walls 13 and along one of their sides. The outer end walls 13 are foldably connected to the bottom 10 along one of their sides. The innerend walls 14 are foldably connected to the outer end walls along one of their sides. The binding and locking strips 15 in length extend as shown at 15' somewhat beyond the line of the ends of the inner end walls.

14 for thepurpose later stated and are relatively narrow in width and are foldably connected along one of their sides to the inner end walls 14. The outer free hanging end closure tabs 16 in length are sufiicieut to cooperate with the outer and inner end walls for closing the container at its sides and ends, and in width are slightly less than the width of the outerand inner end walls to permit the outer end closure tabs to be moved freely inwardly at right angles to the side walls of the container without binding at their lower edges on the bottom 10, the outer end closure tabs being foldably connected at one of their ends to the outer side walls 11. The inner free hanging end 010-- "sure tabs 17'in length are the same as the in width than the outer tabs 16, their lower edgesbeing in line with the tops of the recesses 18 for thereby permitting engagement of the ends 15' therein and permitting bearing of the ends 15- at one side against the inner surfaces of the outer end closure tabs 16 at the ends of the tabs, as seen in Fig. 2.

Inassembling the container'the inner side Walls 12 are folded on their lines of con-- nection to the outer side walls 11 and brought attheir lower edges into contact with the bottom 10, theouter and inner end closure tabs 16 and 17 are folded on their lines of connection to the Outer and inner side walls and swung inwardly at right angles to the. outerand inner side Walls, the Y inner end walls are folded on their lines of carried over the upper edges of the outer. and inner end closure tabs, the bindin and locking strips. 15 are folded inwardy on their lines of connection to the inner end walls 14 and at right angles to these walls.

and the main portions of the strips are 'in the recesses 18,efiicient side and end corner locks for the container being provided and the container being provided at 1ts ends with four thicknesses of the material for reinforcing the container.

In practice the outer and inner side walls 11 and 12 preferably are suitably secured together, as by pasting, for their full lengths and-widths for prov1ding greater stlifness for the container at its sides.

' A similarly formed container may be used as a cover for the first container.

The blank from which the container is formed by folding theblank on the scorings portion comprise the inner end walls 14,

and the binding and locking strips 15 having the lock ends 15'.

The bottom section 10 is the desired length and width of the container, and is defined by the parallel longitudinal scorings 19 and 20 and the parallel transverse scorings 21 and 22. The outer side wall sectlons 11 in length are the same as the bottom section 10 and in width are the desired depth of the container and are defined from the bottom section 10 by the scorings 19 and 20 and from the inner side wall sections 12 by the scorings 23 and 24 and are defined from the outer end closure tabs 16 by extensions of the scorings 21 and 22. The inner side wall sections 12 in length are the same as the outer side wall sections 11 and in width are the same as these'sections for the greater portion of their lengths, are free on their outer sides and are defined from the inner end closure tabs 17 by extensions of the scorings 21 and 22. The inner side wall sections 12 are provided at the ends of their free sides with'the notches or recesses 18,

these recesses inwidth or depth being substantially equal 'to the width of the lock --Q;-ends -15 of the binding and locking strips =-"15. The outer ,end closure tab sections 16 in width are the same as the outer side Wall sections 11, and their lengths are substantially the same as their widths, but they are not necessarily restricted to substantially equal lengths andwidths, because if desirable their lengths ma be. increased any amount provided their lengths are not more than one-half the width of botton'rsection 10. The outer end closure tab sections 16 are defined from the outer end wall sections 13 by the cuts 25 and 26 which are in the line of the scorings 19 and 20, and are defined from the inner end closure tabs 17 by cuts 25 and 26' which are in the line of the scorings 23 and 24, the cuts 25' and 26' rendering the outer and inner end closure' tabs independently free-hanging and facilitating movement thereof to positions for closing the container at its ends. The inner end-closure tabs 17 in length are the same as the outer end-closure tabs 16 and their width is the Width of the inner side wall sections 12 less the depth of the notches or recesses 18, the outer edge of the inner endclosure tabs being in alinement With or in extension of one of the sides of the recesses, the intention being that Whenthe outer and inner end-closure tabs are folded inwardly, as shown in Fig. 2, exposed portions of the inner faces of the outer end-closure tabs will provide one of the sides of the recesses 18, while the exposed inner faces of the outer side wall sections ll provide the bottoms of these recesses, the recesses thus being in depth the thickness of the material of which the outer side wall sections are formed, and in shape adapted to receive tensionally and anchor the lock ends 15 therein. The outer end wall sections 13 in length are the width of the bottom section 10 and in width are the same as the outer side wall sections, are defined from the inner end wall sections 14 by the scorings 27, and are defined from the outer end-closure tabs 16 by the cuts 25 and 26. The inner end wall sections 14 in length and width are the same as the outer end wall sections, are defined from the binding-and locking strip sections 15 by the scorings 28 and are free at'their ends. The binding and locking strip sections 15 are somewhat longer than the inner end Wall the length-of the bottom sides of the recesses 18, the intention being that when the extended or lock ends 15 are bent at right an-. gles to the strips in the lines of the edges of the free ends of the inner end wall sections 14 the ends 15 will be tensionally engageprotect by Letinner side walls'connected to the outer side Walls and provided with inner closure tabs each connected thereto by a corner fold;

the lower portion of each closure tab and the 7 ad acent portion of the inner wall being cut away to form a rectangular side recess. in the inner wall and extending under said corner fold and an end space joining said recess and extending under the inner closure tab to the end thereof, each side recess having a substantially vertical inner edge; inner end walls joining the outer end walls, each bottom and provided with upturned locking ends disposed in said side recesses and proectmg 1nto said, end spaces.

2. .A container comprising, a bottom; outi sections 14 and in widthare substantially carrying a locking strip lying against the er side and end walls connected to the bottom; inner side walls each lying against the inner face of, and connected to the top edge of, anouter side wall and provided with inner closure tabs connected to the inner side wall by a corner fold and forming intermediate pieces parallel to the adjacent end wall; the lower portion of each inner closure tab and the lower portion of the adjacent end of the inner wall being cut away to form a rectangular side recess in the inner wall and extending under said'corner fold and an end space joining said recess and extending to the end of the inner closure tab; inner end walls each joining the top edge of the adjacent outer end wall and extending to said bottom where it :toldably carries alocking strip lying fiat against the bottom and providedwith upturned locking ends filling said side recesses and projecting into said end space and engaging the sideedge faces of said inner end walls whereby the end wall holds the upper part of the locking end in the side recess; said locking ends engaging under said corner folds,

whereby the inner end wall is held against upward movement, substantially without tendency to ,rotate said locking strip and locking ends on the lower edge of the inner end wall as an axis.

3. A container comprising, a bottom; outer side and end walls connected to the bottom; inner side walls each lying against the inner face of, and connected tothe topedge of, an outer side wall and provided with inner closure tabs connected to the inner sidewall by a corner fold and forming intermediate pieces lying parallel to the adjacent end wall; the ,lower portion of each inner closure tab and 'the lower' portion of the adjacent end of the inner wall being cut away and engaging said vertical cess and space extending to form a rectangular side recess in the inner -walland extending under said corner fold and an end space joining said recess and extending to the end of the inner closure tab,

said side recesses each having a substantially vertical inner edge, the top edge of said reparallel to said bottom; inner end walls each joining the top edge of, and lying parallel to, the adjacent outer end wall and extending to said bottom where it foldably carries a locking strip lying flat against the bottom and provided with upturned-locking ends filling, and hori said side recesses edge and forcing inner end wall back zonally fully as wide'as the lower edge of the into said space, whereby saidlockin ends 7 engage the rear part of side edge time of said inner end walls at said horizontal edge,

whereby the end wall holds the upper part of the locking end in the side recess, and said upturned locking ends thrust directly upwardly directly under and against the lower end of said corner fold substantially in line -imately the same size and with the side edge of the inner end wall, whereby said endwall movement, substantially without tendency to rotate said locking strip and locking ends on the lower edge of the inner end wall as an axis.

4. A container comprising, a bottom; outer side and end walls connected to the bottom; outer free end closure tabs foldably connected to the ends of the side walls and disposed against the end walls; inner side walls each lying against the inner face of, and connected to the top edge of, an outer side wall and provided with inner closure tabs connected to the inner side wall by a corner fold and forming intermediate pieces lying against the adjacent end closure tab; said inner closure tabs being entirely free of dircctconnection with the outer closure tabs, thereby to prevent puckering when adjacent tabs are bent at right angles at said line of fold; the lower portion of each inner closure tab and the lower portion of the adjacent end of the inner wall being cut away to form a rectangular side recess in the inner wall and extending under said corner fold and an end space-joining said recess and extending to the end of the inner closure tab, the top edge of said recess and space extending parallel to said bottom; inner end Walls each joining the top edge of, and lying parallel to; the adjacent outer end wall and extending to said bottom where it foldably carries a locking strip lying fiat against the bottom and provided with upturned locking ends filling said side recesses and projecting into said space agalnst said outer closure tab.

is held against upward a tom section, outer side and end wall sections of the same width connected by a score line to the bottom section; outer free closure tabs foldably connected to the ends of the side wall sections; inner side-wall sections foldably connected to the the same Width as, provided with inner end tab foldably connected thereto and entirely free of connection with said outer closure tabs; the outer lateral portion of each inner closure tabs and the adjacent portion of the adjacent, end of the inner wall section being cut away to form a rectangular side recess extending to free edge of, and about the side wall sections and an inner edge transverse to the inner wall section, and a space joining said recess an extending to the end of the inner closure tab, the alined edges of saidrecess and space being parallel to the length of said side sections; inner end wall sections joining the outer edge of, and about the same width as the adjacent outer end wall section and carrying at its outer edge a locking strip the same length as the end wall section and provided with rectangular locking ends approxshape as sald side iao recess foldably j oin'ed thereto each having its end edge fully as long as said alined edge of said recess.

6. A blank comprising'a rectangularbottom section, outer side and end wall sections of the same Width connected by a score line to the bottom section; outer free closure tabs foldably connected to the ends of the side wall sections; inner side-wall sections fold- -ably joining the outer side edges of the outer side wall sections; inner side-wall sections foldably connected to the -free edge of and about the same width as, the side Wal sections and provided with inner closure end tab foldably connected thereto and entirely free of connection with said outer closure tabs; the outer lateral portion of each inner closure tab and the adjacent portion of the adjacent end of the innerwall section being cut away to form a'rectangular side recess recesses and foldal;

extending to the end of the inner Wall section and having an inner edge transverse to the inne wall section, and a space joining said re c-ss and extending to the end of the inner closure tab, the alined edges of said recess and space being parallel to the length of said side sections; inner end Wall sec- I tions joining the outer edge of, and about the same width as the adjacent outer end wall section and carrying at its outer edge a locking strip the same length as the end wall section and provided with rectangular looking ends the same size and shape as said side ."iined thereto each having its end edge as long as said alined edge of said side recess.

Signed at New York, in the county of New Yorkand State of New York, this 29th 7 day of October, A. D. 1924.

EDWARD O. TIN SLEY. 

